Waste Water Operator Lv 1 Exam Prep | Study Guide Questions with Definitive Solutions.

Waste Water Operator Lv 1 Exam Prep | Study Guide Questions with Definitive Solutions. Quiz_________________? A BOD can be removed from the incubator at 5 days plus of minus... A. 1 hour B. 2 hours C. 3 hours D. 4 hours - Answers C. 3 hours Quiz_________________? A good practice is to change work clothing before going home T/F - Answers True Quiz_________________? A grit channel with a slower flow velocity than recommended may allow large quantities of organic matter to settle out with the grit T/F - Answers True Quiz_________________? Accidents can be reduced by thinking safety T/F - Answers True Quiz_________________? Alkalinity is a measure of the ability of wastewater to... A. Neutralize base B. Neutralize acid C. Dissolve organics D. Maintain constant temperature - Answers B. Neutralize acid Quiz_________________? Anaerobic decomposition of wastewater produces... A. Ammonium chloride B. Hydrogen sulfide C. Carbon monoxide D. Copper sulfate - Answers B. Hydrogen sulfide Quiz_________________? Be sure that whatever method of screening disposal your plant uses will not cause and adverse impact on groundwater or surface waters T/F - Answers True Quiz_________________? Entrained air frequently contributes to... A. Reduced wet well capacity B. Less odor around the pump station C. Lower electrical costs D. Pump cavitation - Answers D. Pump cavitation Quiz_________________? Fecal coliform results are reported as MPN per... A. 10 mL B. 50 mL C. 100 mL D. 1,000 mL - Answers C. 100 mL Quiz_________________? Filamentous bulking of activated sludge may be controlled temporarily by... A. Adding sodium chloride to the aeration tank B. Spraying water on the aeration tank surface C. Carefully chlorinating the return sludge and mixed liquor D. Aerating the final settling tank - Answers C. Carefully chlorinating the return sludge and mixed liquor Quiz_________________? For a combined sedimentation-digestion unit what is the purpose of inflow measurement? A. To determine if effective digestion is taking place B. To determine if sufficient chlorine is being applied to the effluent C. To determine the efficiency of clarifier removal D. To determine the hydraulic loading on the facility - Answers D. To determine the hydraulic loading on the facility Quiz_________________? Historically, Americans have shown a great lack of interest in the protection of their water resources T/F - Answers True Quiz_________________? How much education does an operator need? A. Depends largely on the type of treatment facility and also on local certification and entry-level job requirements B. Depends on availability and cost of attending local education C. Depends on the faculty and the local training company D. Depends on the operators ability and time to learn - Answers A. Depends largely on the type of treatment facility and also on local certification and entry-level job requirements Quiz_________________? In a healthy activated sludge process which of the following organisms will most likely be found in the greatest numbers? A. Stalked Ciliates B. Amoebas C. Free swimming ciliates D. Nymphs - Answers A. Stalked Ciliates Quiz_________________? In most activated sludge plants the waste activated sludge is pumped to waste sludge handling facilities T/F - Answers True